#9E9C83

CSS

:root {
  --knock-on-wood: #9e9c83;
  --knock-on-wood-rgb: 158 156 131;
  --knock-on-wood-oklch: oklch(0.688 0.035 103.5);
}

.element {
  color: var(--knock-on-wood);
  background-color: hsl(56 12% 57%);
  border-color: oklch(0.688 0.035 103.5);
}

Tailwind CSS v4

@theme {
  --color-knock-on-wood: #9e9c83;
  --color-knock-on-wood-50: #f6f6ea;
  --color-knock-on-wood-100: #e9e9db;
  --color-knock-on-wood-200: #d6d5c4;
  --color-knock-on-wood-300: #b9b9a4;
  --color-knock-on-wood-400: #a2a088;
  --color-knock-on-wood-500: #8a886d;
  --color-knock-on-wood-600: #75735c;
  --color-knock-on-wood-700: #5d5c4a;
  --color-knock-on-wood-800: #454335;
  --color-knock-on-wood-900: #2f2e24;
  --color-knock-on-wood-950: #1c1b13;
}

SCSS

$knock-on-wood: #9e9c83;
$knock-on-wood-rgb: 158, 156, 131;
$knock-on-wood-light: mix(#fff, $knock-on-wood, 20%);
$knock-on-wood-dark: mix(#000, $knock-on-wood, 20%);

.element {
  color: $knock-on-wood;
  box-shadow: 0 0 0 2px rgba($knock-on-wood, 0.35);
}